该程序在笛卡尔平面打印圆圈。打印ascii圈+轴问题
输入是:半径,圆心的坐标(cx,cy)以及我们想要打印圆的字符。
如果圆的点与轴重叠,则点优先。我写了一个在方法drawCircle中打印轴的条件,但图像失真...
有些东西在躲避我...有人能帮我找到我的错误吗?
这里是我的整个程序(有问题的方法是最后一个,画圆):
public class Circle {
public static void main (String[] args){
System.out.println(onCircle(1,2,3,4,5));
drawCircle(1,3,3,'*');
drawCircle(3,3,3,'*');
drawCircle(5,10,12,'*');
}
//Question 1A
public static boolean onCircle (int radius, int cx, int cy, int x, int y){
//default answer is false, but if the inequality holds then it is set to true
boolean isDrawn = false;
if(Math.pow(radius,2)<=(Math.pow((x-cx),2)+Math.pow((y-cy),2)) && (Math.pow((x-cx),2)+Math.pow((y-cy),2))<=(Math.pow(radius,2)+1)){
isDrawn = true;
}
return isDrawn;
}
//Question 1B
public static void verifyInput (int radius, int cx, int cy){
//if radius is negative, display error message
if (radius<=0){
throw new IllegalArgumentException(" The radius of the circle must be a positive number.");
}
//if the center of the circle with radius 'radius' causes the circle to 'overflow' into other quadrants
//, display error message
if ((cx-radius)<0 || (cy-radius)<0){
throw new IllegalArgumentException("the circle with requested parameters does not fit in the quadrant."
+"Consider moving the center of the circle further from the axes.");
}
}
//Question 1C
public static void drawCircle (int radius, int cx, int cy, char symbol){
verifyInput(radius,cx,cy);
//set the values for extension of the axes (aka how long are they)
int xMax = cx+radius+1;
int yMax = cy+radius+1;
for(int j=yMax; j>=0; j--){
for(int i=0; i<=xMax; i++){
//set of if-block to print the axes
if (i == 0 && j == 0){
System.out.print('+');
}
else if(i == 0){
if (j == yMax){
System.out.print('^');
}
if(j != yMax && onCircle(radius,cx,cy,i,j)==false){
System.out.print('|');
}
}
else if(j == 0){
if(i == xMax){
System.out.print('>');
}
if(i != xMax && onCircle(radius,cx,cy,i,j) == false){
System.out.print('-');
}
}
//if block to print the circle
//verify for each coordinate (i,j) in the quadrant if they are on circle
//if =true print symbol, if =false print empty character
if(onCircle(radius,cx,cy,i,j)==true){
System.out.print(symbol);
}
else{
System.out.print(' ');
}
}
System.out.println();
}
}
}
这里是我得到:
正如你所看到的在图片中,第一和第三圈都很好,但与轴重叠一个distored
非常感谢!一点点新的编码,所以我有时会忘记这些事情。 –
不客气。我们都在那里。祝你好运。 – alawand